Study on particle size distributions of the fallout dust from the atmosphere of Qena,Egypt |
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| Institution: | 1. Faculty of Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada;2. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, PR China;1. Department of Engineering, Aarhus University, Blichers Allé 20, P. O. Box 50, 8830 Tjele, Denmark;2. Beijing Agricultural Machinery Institute, 100083 Beijing, China;3. Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907, USA;1. Institute of Animal Science and Technology, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain;2. El Canto Agroalimentaria, Carretera de Villasequilla, Km 30.9, 45420, Almonacid de Toledo, Toledo, Spain;3. Department of Biotechnology, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain |
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| Abstract: | The total number of particles, particle size and shape, as well as particle size distribution have been studied for the fallout dust in the atmosphere of Qena (upper Egypt). Dust particles were collected directly on slides for microscopic analysis at two collection sites. The frequency distribution of sizes is plotted against equal intervals of size. The results shwo that the highest percentage of particles have size < 5 μm and are of irregular shape. The high degree of similarly between the PSD results indicates a small variability in atmospheric conditions in Qena during the period of study. The effective mean particle diameters were calculated. |
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